Manual copy of certain file types fails with error due to a firewall
Applies to
- Ontap 9
- CIFS/SMB
Issue
- Manual copy to a CIFS share of a file (type:
.exe,.dll...) is failing - Error message observed: "
Network Error - there is a problem accessing "\\path...", Make sure you are connected and try again"
- Copy of other files is happening without any issues
- A different server with the same user account copying the file works
- Copying the file from source location to desktop (local disk) works
- Simultaneous packet traces on destination cluster and client:
- Node Packet trace - Node LIF:
10.10.10.10:
34 12:57:46.985462 10.10.10.135 10.10.10.10 SMB2 1 122 SetInfo Request FILE_INFO/SMB2_FILE_ENDOFFILE_INFO File: test\file.dll
35 12:57:46.985657 10.10.10.10 10.10.10.135 SMB2 1 64 SetInfo Response
36 12:57:47.004016 10.10.10.135 10.10.10.10 TCP 1 61 62385 → 445 [RST, ACK] Seq=3008 Ack=2550 Win=261376 Len=0- Client Packet Trace - Client IP:
10.10.10.135:
13643 12:57:46.964791 10.10.10.135 10.10.10.10 SMB2 359 128 SetInfo Request FILE_INFO/SMB2_FILE_ENDOFFILE_INFO File: test\file.dll
13645 12:57:46.981608 10.10.10.10 10.10.10.135 SMB2 359 57 SetInfo Response
13646 12:57:46.982298 10.10.10.135 10.10.10.10 TCP 359 128 62385 → 445 [ACK] Seq=3008 Ack=2550 Win=261376 Len=16416 [TCP segment of a reassembled PDU]13647 12:57:46.993463 10.10.10.10 10.10.10.135 TCP 359 59 445 → 62385 [RST, ACK] Seq=2550 Ack=4376 Win=261376 Len=0- The TTL on the
[RST,ACK]frames are smaller than in previous packets for the same stream